If you want to grep for certain http response codes in a apache log file
- Look for all access requests with a 200 response code[code] grep -i "[: ]200[: ]" HTTP_ACCESS_LOG [/code]
- Look for all access requests that do NOT have a 200 response code[code] grep -i -v "[: ]200[: ]" HTTP_ACCESS_LOG [/code]
Details of the options
- [code]"[: ]"[/code]
tells grep to look for space or tab before the specified string, which in this case is 200.